Cerastium bialynickii

Tolmatchew

Trudy Bot. Muz. 21: 81, fig. 1. 1927.

Common names: Bialynick’s mouse-ear chickweed
Synonyms: Cerastium arcticum var. sordidum Hultén
Treatment appears in FNA Volume 5. Treatment on page 82. Mentioned on page 74, 76, 77, 79.

Plants perennial, compact, pulvinate, taprooted. Stems ascending, much-branched at base, 2–10 cm, densely hispid-pubescent, hairs patent, fuscous, multicellular; internodes short; small axillary tufts of leaves absent. Leaves dense below the inflorescence; blade broadly lanceolate, elliptic-lanceolate to ovate or obovate, 5–10 × 1.5–4 mm, thick and ± fleshy, apex broadly acute to obtuse, hispid, hairs fuscous, multicellular, long; proximal leaves marcescent, sometimes subglabrous. Inflorescences often 1-flowered and compact, sometimes 2–3-flowered cymes, hairs patent, dense, fuscous, eglandular and glandular; bracts lanceolate, with or without narrow, scarious margins, densely pubescent, often glandular. Pedicels straight or ± angled at base and/or apex, 5–12 mm, 1–2 times as long as sepals, densely pubescent with long, eglandular and short, glandular-hairs. Flowers: sepals usually purplish, 5–6 (–7) mm, herbaceous center narrowly lanceolate, margins broad, making apex obtuse, densely pubescent, hairs long, stiff, glandular and eglandular; petals oblanceolate, 7–9 mm, 1–1.5 times as long as sepals, apex 2-fid; stamens 10; styles 5. Capsules cylindric, slightly curved, 9–12 mm, 1.5–2 times as long as sepals; teeth 10, erect, margins convolute. Seeds brown, 0.8–1 mm, tuberculate; testa not inflated, tightly enclosing seed. 2n = 108.


Phenology: Flowering summer.
Habitat: Tundra, rocky exposures, screes, nunataks in the high arctic
Elevation: 0-1300 m

Distribution

V5 167-distribution-map.gif

Greenland, N.W.T., Nunavut, Alaska, Eurasia (Russian Far East), Eurasia (arctic Siberia and associated islands), Eurasia (Spitzbergen)

Discussion

Cerastium bialynickii previously was included in C. arcticum but is very different from that species, being a small, compact plant with a dense, hispid, fuscous pubescence, a small calyx with the broad, scarious margins making it obtuse, and small flowers, capsules, and seeds. Cerastium bialynickii resembles small compact plants of C. beeringianum but it differs in calyx shape and chromosome number.

Selected References

None.

Lower Taxa

None.

"-2timesaslongassepals" is not declared as a valid unit of measurement for this property."-1.5timesaslongassepals" is not declared as a valid unit of measurement for this property.

... more about "Cerastium bialynickii"
perigynous +  and hypogynous +
John K. Morton +
Tolmatchew +
elliptic to broadly ovate +  and linear +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
elliptic-lanceolate +  and ovate or obovate +
thick;1.5mm;4mm +
often +  and herbaceous +
lanceolate +
reduced +
herbaceous +  and scarious +
8 +  and 6 +
cylindric +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
lanceolate +
Bialynick’s mouse-ear chickweed +
2-3-flowered +
dish--shaped +
expanded +
Greenland +, N.W.T. +, Nunavut +, Alaska +, Eurasia (Russian Far East) +, Eurasia (arctic Siberia and associated islands) +  and Eurasia (Spitzbergen) +
0-1300 m +
straight +  and curved +
central +  and peripheral +
pistillate +  and subsessile +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Tundra, rocky exposures, screes, nunataks in the high arctic +
eglandular +  and multicellular +
disc--shaped +  and dish +
sessile +  and petiolate +
connate +
translucent +  and purplish +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
1-2 times as long as sepals +
reflexed;erect +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
perigynous +  and hypogynous +
fugacious +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Flowering summer. +
Trudy Bot. Muz. +
tuberculate +
compressed +  and angular-obovate +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
persistent +
distinct +
elliptic;ovate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
much-branched +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
subterminal +
[30 +  and 5 +
roughened +  and papillate +
distinct +
clavate +  and filiform +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Cerastium arcticum var. sordidum +
rooting +  and rhizomatous +
Cerastium bialynickii +
Cerastium +
species +
not inflated +
divided +
10 +  and 8 +
pubescence of simple hairs or stalked glands +  and glabrous +
19 +, 18 +, 17 +, 15] +, 13 +  and [9 +